Dynamo-electric machines

Details Dynamo-electric machines Dynamo-electric machines

1988-05-05

1990-01-09

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310262, H02K 2112

Patent

active

048930407

ABSTRACT:
A rotating part for a high speed synchronous generator comprises a core of magnetic material, side walls of nonmagnetic material, and an outer circumferential portion. The outer circumferential portion is provided on its outside with an inner layer, an inner retaining ring, an outer layer and an outer retaining ring. The inner and outer layers are made up of magnetic and nonmagnetic portions. The retaining rings are of magnetic material. The greater strength and lighten weight of the nonmagnetic portions reduces the centrifugal forces on the magnetic portions. In an alternative embodiment, the outer circumferential portion comprises a number of layers comprising alternate portions of magnetic and nonmagnetic material, retained by rings of magnetic material. The nonmagnetic portions support the magnetic material, and prevent it from damage through centrifugal force. Another alternative embodiment includes recesses in the outer retaining ring and a nommagnetic material disposed in said recesses for securing the retaining ring. Another alternative embodiment comprises a magnetic core, a nomagnetic side wall of high strength, a magnetic portion, and a retaining ring divided into magnetic parts and nonmagnetic parts.

REFERENCES:
patent: 4117360 (1978-09-01), Richter
patent: 4433261 (1984-02-01), Nashiki et al.
patent: 4562399 (1985-12-01), Fisher
patent: 4674178 (1987-06-01), Patel
patent: 4742259 (1988-05-01), Schaefer et al.
patent: 4748359 (1988-05-01), Yahara et al.

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